From b9d18b8334fe49f0ed8677e5e431a15c71dee0ac Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se> Date: Mon, 14 Jan 2002 17:02:38 +0100 Subject: [PATCH] Use static const for all tables. (des_set_key): Use a new const * variable for the parity procesing, for constness reasons. Rev: src/nettle/des.c:1.6 --- des.c | 39 +++++++++++++++++++++++---------------- 1 file changed, 23 insertions(+), 16 deletions(-) diff --git a/des.c b/des.c index 0b761a05..9f4f3252 100644 --- a/des.c +++ b/des.c @@ -41,14 +41,18 @@ static DECRYPT(DesSmallFipsDecrypt,TEMPSMALL, LOADFIPS,KEYMAPSMALL,SAVEFIPS) /* various tables */ -uint32_t des_keymap[] = { +static const uint32_t +des_keymap[] = { #include "keymap.h" }; -static uint8_t rotors[] = { +static const uint8_t +rotors[] = { #include "rotors.h" }; -static char parity[] = { + +static const char +parity[] = { #include "parity.h" }; @@ -68,20 +72,23 @@ des_set_key(struct des_ctx *ctx, const uint8_t *key) register char * b0, * b1; char bits0[56], bits1[56]; uint32_t *method; - uint8_t *k; - - /* check for bad parity and weak keys */ - b0 = parity; - n = b0[key[0]]; n <<= 4; - n |= b0[key[1]]; n <<= 4; - n |= b0[key[2]]; n <<= 4; - n |= b0[key[3]]; n <<= 4; - n |= b0[key[4]]; n <<= 4; - n |= b0[key[5]]; n <<= 4; - n |= b0[key[6]]; n <<= 4; - n |= b0[key[7]]; - w = 0x88888888l; + const uint8_t *k; + { + register const char *b; + /* check for bad parity and weak keys */ + b = parity; + n = b[key[0]]; n <<= 4; + n |= b[key[1]]; n <<= 4; + n |= b[key[2]]; n <<= 4; + n |= b[key[3]]; n <<= 4; + n |= b[key[4]]; n <<= 4; + n |= b[key[5]]; n <<= 4; + n |= b[key[6]]; n <<= 4; + n |= b[key[7]]; + w = 0x88888888l; + } + /* report bad parity in key */ if ( n & w ) { -- GitLab